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Linus Torvalds Still Rejects KVM Tool From Kernel

Linux Kernel

Published on 20 October 2012 08:43 AM EDT
Written by Michael Larabel in Linux Kernel
9 Comments

Linus Torvalds has reaffirmed that at this point he doesn't intend to pull KVMTool into the mainline Linux kernel.

KVMTool is the lightweight QEMU-free native KVM tool. KVMTool has been developed by several open-source developers for nearly two years.

This tool for toying with KVM virtualization supports many features like SMP, various virtio features, QCOW2 read-write support, etc. The developers behind the tool have wanted to merge it into the mainline Linux kernel as a separate tool/utility (similar to Intel's turbostat and various other small user-space utilities living within the kernel tree) since this tool can stress the Kernel-based Virtual Machine components without QEMU.

KVMTool has been living within the "linux-next" tree, but hasn't been accepted by Linus Torvalds into his mainline tree, including for the latest Linux 3.7 merge window.

Torvalds has now explained his reasoning for not accepting this pull: "I have yet to see a compelling argument for merging it. It's tons of code, it doesnt match the original "small simple" model, and I think it would be better off as a separate project."

So now if KVMTool is to survive it will likely just need to be maintained as its own separate project.

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